From cbe7df3b3f8b9b0a7481ee44df258ba0d9d03000 Mon Sep 17 00:00:00 2001
From: Stanislaw Skowronek <skylark@disorder.sko>
Date: Wed, 13 Nov 2013 10:11:01 -0500
Subject: Add some particle interaction.


diff --git a/src/simulation/Simulation.cpp b/src/simulation/Simulation.cpp
index b311465..07bde47 100644
--- a/src/simulation/Simulation.cpp
+++ b/src/simulation/Simulation.cpp
@@ -2190,6 +2190,11 @@ int Simulation::try_move(int i, int x, int y, int nx, int ny)
         if(parts[i].sld && r && parts[i].sld == parts[r>>8].sld)
             return 1;
 
+        if(!e && r && parts[r>>8].sld) {
+            parts[r>>8].vx += parts[i].vx;
+            parts[r>>8].vy += parts[i].vy;
+        }
+
 	/* half-silvered mirror */
 	if (!e && parts[i].type==PT_PHOT &&
 	        (((r&0xFF)==PT_BMTL && rand()<RAND_MAX/2) ||
--
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